Gas-mixer.



G. W. THOMPSON.

GAS MIXER.

APPLICATION msn vec a. 19u.

1,287,139. Patented Dec. 1o, 1918.

la nayssrAPrEsrAYrENrEEIoE.

GEORGE W. TIIOMPSoN, OE SPRINGFIELD, MISSOURI, ASSIGNOR OE' yrHIR'IY-'rwo ONE- HUNDRED AND-TWENmY-EIGETIIS To WILLIAM E. SANFORD; 'TWENTYAEOURONE- HUNDRED-AND-'rWENfrY-EIGnrI-Is ro DOUGLAS J. LANDERS, TWENTY-ONE o NE- HUNDRED-AND-TWENTY-EIGIITES ro WILLIAIVI A. MeA'rEE, T wELvE ONE-RUN- DREn-AND-TWENTY-EIGHrI-IS 'ro ALEIIONSO B. LovAN, TWELvE IQNE IIIINrnaEn- AND-TWENrY-EIGHTHS To GEoRGE vv. YOUNG, AND TIIREEoNE-IIUNDREn-AND- TWENTY-EIGHTHS To lWILLIAM fr; SHORES, ALL OE SPRINGFIELD; MISSOURI, AND.

SIX ONE-HUN:DRED-AND-TwENrY-EIGIITLIS 'ro CLARENCE ENIGHOLS, OE NEW YORK, N. Y.

GAS-MIXER.

To all 'whom t may concern: s

Be it known that I, GEORGE W. THOMPSON, a citizen of the United States, residing at Springfield, Greene county, Missouri, have invented a 'new and useful Gas-Mixer of which the following is a specification.

yThis invention relates to gas mixers. The invention relates specilically to an improved gas mixer for use in connection with internal combustion engines using gas of high explosive potential such, for4 instance, as acetylene gas.

An object of the invention is to provide an improved gas mixer with improved means for controlling the passage of the acetylene gas into the air mixing chamber and preventing back-fire into the passage from which the gas is taken. l

Another obj ect of the invention is to provide a gas mixer of the character mentioned with improved means `for operating the valves controlling thepassageof. the Ygas towardthe air mixing chamber.` Y Other objects relate to the vconstruction andarrangement of the parts'and will fullyy appear from the `following description, in Ywhich reference is made to the accompanying drawing illustrating one form ofthe invention, inwhich- Y f Figure 1 isa Sectional 'view` of the carbureter.l ,Y Fig. 2 is a sectional view lon the line `2-,2 ofFigl.'

Fig. 3 is a sectional viewonthe-line ofFig.1.y-,- v The gas mixer illustrated includes a mixing chamber 1 into which the gas and the air are admitted 'and -from which the mixture is drawn into the manifold and thecyli'nders of the engine; a supply pipe 2 vfor conducting the gasfrom any source of supply tothe mixer; and the devices and appliances between the supply pipe and the mixing chamber for controlling the passage of the gas into the mixing chamber.

yFrom the supply pipe 2 the gas is .admitted into a receiving chamber 3u From the receiving chamber 3 `the, gas passes into a chamber 4 through a-r valve controlled .pas-

specification of Letters Patent. Patented Dec, 10, 1918, Application led December 8,1917. Serial No. 206,168. i i

sage. f The valve controlling passage between the chambers 3 and 4 comprises a head 5 arranged to seat withinj the passage to close the same and-movable downwardly .into the chamber 4 under the-pressure of the gas in order to open the passage; and permit the gas to pass from the chamber 3" into the chamber 4. The valvel isprovided with a stem 'operating. within a sleeve bearing 7 and having one or more nuts y8in threaded engagement With the upper end thereof. The valve is .yieldingly retained in closed adjustment by va spring 9 incircling the sleeve bearing 7 and having its lower vends abutting against the support of the sleeve bearing and its upper end against the nut 8. The-spring being of the expansion type, the valve is thereby retained in closed adjustment except-.when the. engine isin operation. When the engine is started the air is drawn out ofthe' chamber 4, thus enabling thel gas to 7open thef valve 5 Yin opposition to the springf9-andpass intothe chamber 4,

whence the gasfis drawn into the airmixing chamber-fand into the engine. It4 will i.be understood that the valve 56 operates rapidly to open and to closed positions and ,that `whenever the chamber 4 is filled with air or gast-he spring 9-'will close the valve 5 ,and

prevent the passage of any additional quan- .tity of ygas `into the chamber 4, until the pressure against the lower end of the valve 5 is relieved, which occurs during the intake movement of each piston ofthe engine.;l 'f

. From fthe chamber 4` the k gasenters a ychamber 10 through passages l11 and from the chamber 10 the gas vpasses into the mixing chamber'l through a passage 1 2 constitutinff a communication between the charnber landthe mixing chamber. 1i yThe passages y11 are preferablyv tapered and inV each passage'a taperedvalve Y1 3 is Supported. y As shown, there are two, pas- .sages 1l eachY equipped with a valve 13;r` By using thetwo valves;v and the two passagles controlled thereby,v less...movement off-t e valves iis requlred to open andclose the passages than kwould be required in order. to

regulate a single passage by a single valve positions, and manipulative means for moving said supports in opposition to said actuator to move said valves to positions to open said passages to a greater extent.

3. A gas mixer, comprising a mixing chamber, a gas receiving chamber, an intermediate chamber between the receiving chamber and the mixing chamber, a valve controlling the passage of gas from the receiving chamber to the intermediate chamber and arranged to be moved to open position by the pressure of the gas in the receiving chamber, means normally holding said valve in closed position, valves controlling the passage of the gas from the intermediate chamber to the mixing chamber, movable supports for said valves, an actuator controlling said supports and normally holding said valves in positions in Which said valves are nearly closed, and a device for moving said supports in opposition to said actuator to move said valves to open positions.

4. A gas mixer, comprising a mixing chamber, a gas -receiving chamber, an intermediate chamber-betvveen the gas receiving chamber and the mixing chamber, a valve controlling the Apassage of gas from the receiving chamberto the intermediate cham- "f ber and arranged to be moved to Open position by the pressure of the gas in the receiving chamber, apassage for conducting the Copies of this patent may be obtained for five cents each, by addressing the gas from the intermediate chamber to the mixing chamber, valves for controlling said passage, devices normally supporting said valves in position to permit a predetermined volume of gas to pass Jfrom the intermediate chamber to the mixing chamber, and means i'or moving said devices from their normal positions to positions in Which said valves Will permit a greater volume of gas to pass from the intermediate chamber to the mixing chamber.

5. A gas mixer, comprising a `mixing chamber, a gas receiving chamber, a chamber intermediate the gas receiving chamber and the mixing chamber, a normally closed valve 'controlling the passage of gas from the receiving chamber into the intermediate chamber and arranged to open under the pressure of the gas in the receiving chamber, constantly open valves controlling the passage of gas 4from the intermediate chamber into the mixing chamber, supports holding said valves normally in position to permit a predetermined quantity of gas to pass from the receivingchamber to the mixing chamber, an actuator Vfor holding said supports in the positions mentioned, and manipulative means for moving said supports to positions in which said valves will permit a greater volume of gas toA pass from the intermediate chamber into the mixing chamber.

GEORGE W. THOMPSON.

Washington, D. 0.

Commissioner of Patents, 

